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1 byte removed thanks to @Mr.Xcoder
lambda n:sum(alln%k<all(k%j for j in range(2,k))>n%k for k in range(2,n+1))
This times out for the largest test cases. Try it online!Try it online!
lambda n:sum(all(k%j for j in range(2,k))>n%k for k in range(2,n+1))
This times out for the largest test cases. Try it online!
lambda n:sum(n%k<all(k%j for j in range(2,k))for k in range(2,n+1))
